Regulation of band edge and specific surface area of BixInyOCl microsphere for excellent photocatalytic performance

•Hierarchical structured BiInOCl is prepared by simple solid solution method.•Porous structure of BiInOCl is changed with the increase of solid solution of indium.•The conduction band and valence band potentials of BiOCl shift towards negative and positive after indium solid solution.•BiInOCl has ex...

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Bibliographic Details
Published in:Journal of alloys and compounds 2021-06, Vol.867, p.159052, Article 159052
Main Authors: Zhang, Yanguang, Tian, Jing, Tian, Detong, Li, Weibing, Liu, Zhenze, Tian, Fenghui, Bu, Yuyu, Kuang, Shaoping
Format: Article
Language:English
Subjects:
BiInOCl
Conduction bands
Cotton
Energy band control
Indium
Industrial wastes
Norfloxacin
Photocatalysis
Photocatalysts
Photocatalytic performance
Sewage treatment
Solid solution
Solid solutions
Specific surface
Surface area
Valence band
Wastewater treatment
Water treatment
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Summary:•Hierarchical structured BiInOCl is prepared by simple solid solution method.•Porous structure of BiInOCl is changed with the increase of solid solution of indium.•The conduction band and valence band potentials of BiOCl shift towards negative and positive after indium solid solution.•BiInOCl has excellent performances for photocatalytic degradation of Cr(VI) and other organic pollutants. [Display omitted] In order to solve the problem of low efficiency of existing photocatalyst in wastewater treatment, BiOCl and BixInyOCl solid solution photocatalysts with different indium element content were prepared by one-step solvothermal method. The solid solution of indium element greatly affects the porous structure and specific surface area of BiOCl, and the specific surface area of BiInOCl-0.5 is 9.26 times that of BiOCl, which provides abundant active sites for photocatalytic reaction. Furthermore, after indium element solid solution, the conduction band and valence band potentials of BiOCl shift towards negative and positive, respectively, enhancing the redox capacity of the photogenerated electrons and holes. Thus, BiInOCl shows excellent photocatalytic performances for reduction of Cr(VI), degradation of norfloxacin, dyes and even industrial cotton pulp wastewater. This provides a possibility for the practical application of photocatalytic technology in industrial wastewater treatment.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.159052